Stoker for furnaces.



:PATBNTED JULY 31, 1906.

'A. J. M AsKREY.-- v ISTOKER FOR FURNACES.

APPLIOATION FILED JAN. 26, 1903.

' 3 SHEETS-SHEET 1.

0 0 u u 6 O u Q Q PATENTED JULY 31, 1906.

3 LLMASKREY. STOKBRF URNAGES.

APPLICATION JAN-26, 1903.

a SHEETS-SHEET 2.

PATETITED JULY 31; 1906, A J. MASKREY. STOKER FOR FURNACES.

APPLICATION FILED JAN. 26, 1903.

4 s SHEETS-SHEET a.

na-sazaie,

Stoker's for Furnaces, of 1s a specification NiTED ARTHUR JAMES .MiisKREY,

PATENT OFFICE.

F ARTI S FERRY, onroQ STOKEB FOB Fu au ci-zs. 7

i Specification of To (1 66 whomit may concern:

Be it known that I, ARTHUR JAMES MASK-'- nEY,-a subject ofthe King ofGreat Britain;' and a resident of Martins Ferry, county of Belmont, andState of Ohio, have invented certain new and ;useful I111 rovements- Iwhic the following F My invention relates to new and usefuliniprovementsin stokers, and more particularly to a novel Stoker forfurnaces and it consists in the particular construction, arrangement;and combination of. parts, which will hereinlafter be fully described. s

The chief object of. my invention is to"pro vide a simplemechanicalgstoker for evenly distributing=fuelover the'gr'ate-bats of afur- I nace.

J liab e to et out of order.

I provide a stoker for furnaces which will in no A further-objectistopro ide a'devic e of the character mentioned which isextremely sirn lein its construction and which is little A still lrther object of theinventionis to I way interfere with thestoking of the furnace by hand inthe ordinary 'm'anner when itsis necessary to sto said stoker for anyreason,

' since it IS locate in a position which is out of thewayz -f a In des'bingmy invention in detail referonce: ishadto the acc'omanyingdrawings,

' formingpart of this speci cation; in which- Figure 1 isa irontelevation of my-invention complete, it being shown in position. Fig. 2"18 a cross-sectlon of my invention and v a i'urnacdtdwhich it isapplied. Fig. 3 is an end elevatioli'ef the same. F-i 4 isja brokenportion of thes'tudded wheel,--s owi' in ele vation a stud theantifriction-rol erprovided thereon.- 'Fig. 5 is a cross-section of lthe same, showing the antifriction-rollerin longitudinal section; andFig. 6 is'a perspective view of a portion of the pocketed cylin- *lder.l 145 the drawings like reference numerals designate like partsthroughout the several views." y.

Real-1mg wa drawin s, 1 indicates the front wall of a furnace,2indicates the' grate- "bars'in said-furnace on which the fuel is con--i Z'sumed, and, 3' indicates theopenings orfdoors :throughwhichthe'fumace'gis ordinarily "fired, 4 all of said parts being of theordinary .or usual construction. A ''short --distance ahove' the doors 3I rovide a longitudinal opieni 4, substantialy as shown, through thegwdfi 1 sweep 14, the lower edge .of w 'ch is shaft 7.

. ing bent to form a ,cy 'ndrical-surface having Letters Patent. 1 IPatented July 31, 1906.

= I Application filed January 26,1908. ilerial No. 140,833-

"i o thesaid frontwall -1 atea'ch end of said ,lon itudinal opening' i'Isecure a bracket 34, an to the upper edge of each of said brackets Ibolt an irregularly-shaped plate'5.

outer faces of said lates 5 at a suitable point 7 on which-is fixedlysecured a cylinder 8, provided .with one or. morellongitudirial 'pockets9 in the face thereof. A second shaft ;10 is journaledin a-similarmanner. in bosses ll provided on the outer faces of the indegrallongitudinal lug 1-3, to whlchib'bbited or-otherwise securedalongitudinal late-01' sli htly out of contact-witha plate 15.

lrovided on a boss 16 on thefouter face-of one of the plates 5 below andin the rear of v the boss 6 is gear-wheel" 17, which inter mesheswith asimilar gear-WheeLlSon the' The said late 15 is secured oven; the baseof the opening 4 and extends hack" ward a distance from said openini andis su ported at each endby the brac rearwardly-extended ortio'n of saidplate bethe center of the shaftlO as its axisi j 19 indicates thecoalchutc-',- the under-side 200i which is extended to the' face ofthecylinder 8, as shown, toform the under'side of the ho per 21. Saidunderside -20 isthencei passes about the rear'face of saidcylinder {8and ends in front of the sleeve12, the object 5 of said extension 22being to form a guard a ainst the cold draft of air to the o ening 4;,KW

. nacefwall liscurved outward at the 'top iof i 6o Journaled inbosses'6', provided. on the above the longitu m1 opening 4,18- a shaft 4plates'5, below the first-mentioned shaft7', v and-about this shaft10-is an incasing sleeve 12, having thereonbetween the lates fi an ets34,111 e a 9 exten ed, forming an extension 22, wh ch chwould beconsequent-were t e'space; 5,} between said cylinder andsaid sleeve.left rod op 01" ZI- SSiCl iie cylinder, v

spring being suitahly secured and provided adapted to throw the coalwhich is delivered between the points of $1116 extensions 22 and 26backward, so that it will fall upon the plate close up against the sweep14.

On one of the faces of the gear-wheel 17 is one or more studs 29.,.adapted .to engage a normall horizontal arm 30, provided onthe end of te sleeve 12. Fixed to the op osite end of said sleeve 12 is an arm 31,si ar to the arm 30, to the end-of which is attached one end of'a sprin32, the other endof said with an adjusting-nut 35. saidfim'ingis soadjusted as to normally hold shad arms in.

a horizontal position, and consequently the sweep 14 in a verticalposition.

I The studs '29 are preferably provided with antifriction-ro'llers 33,substantially as shown in Figs. 4 and 5.

As is obvious, the device may be divided manner with the motive power anits-driven forward-that is, in the direction indicated by arrow in Figs.2 and 3ca 'ng therewith the pocketed cylinder 8. I e eoaldelivered tothe chute 19 passes'dowuward into the ho per 21 and falls uponsaidcylinder-8.

As'sai cylinder turns forward, a quantity of coal is gathered in thepockets 9 and iis-carried forward until the point of the extension 26 ispassed, when it \WI 1 dro to theguide or plate 15" close it against theswee 141 As said shaft 7 revo ves,the gear-Wheel 17,which intermesheswith the gear-wheel 18 on said shaft 7, is caused to turn in are'arwardly-direction, as indicated by arrow in Figs. 2 and 3, and assaid "wheel 17 revolves one of the studs 29 engages the arm 30, which isfixed on the sleeve 12, and raises said arm there, with, thus drawingthe swee' back inset.

stantially the position shown ted lines in Fig. 2. Immediate lease ofsaid arm 30, actuated y the spring 32, attached to the arm 31, saidsweep 14 is thrust forward to substantially the position indicated'by'the front dotted lines in said Fig. 2, swee )ing the coal which liesonthe plate 15 throng the opening 4 upon the grate'of the furnace. Thesweep then drops back to its normal vertical position, ready for arepetition of the foregoing o oration.

As will be seen by re erence to Fig. 3 of the the real-dotchute 28,whereby it is cause to fall the upon the 're- 1 drawings, the studs 29are located at une ual distances fromthe conterrof the wheel. object ofthis arrangement or construction is to vary .the tension upon the sprin32 by raising the arm 30 to different heig its, and thus to actuate thesweep 14 to make thrusts or sweeps of varying force. In this way I amable to regulate the distribution of the coal over the grate, as it isquite obvious that the stud farthest from the center of the wheel willraise the arm 36 highest, resulting in the greatest tension upon thespring, and consequently the sweepwill be t egreatest,=throwmg'thecoalto thelanthermostend of-the grate. llhe nextstud, being located at a'less distance from the center of thewheel, will cause the coal to beswept to the middle eithe -grate, and the stud Jocated the-nearestthe-center of the wheel will cause the shortestsweep mesulting in thecoal hcing ewe t cnly overj edge of the openin 4. Stud -studs aresopositioned orarranged t at in one revolution of :the cylinder the gratewill be evenly covered with-coah'or, inother words, anevenly-distributed bed of fuel will lie on the-grate bars.

From the foregoing description it will be seen that I provide anextremely simple device of the character described, said device beingadapted 'to distribute fuel evenly over the grate, and thus secureperfect combustion.

Having thus descnihsd my invention, what 'I claim as new, and desire tosecure by Lea ters Patent, is-

1. In a stoker, the combination with a coal ehutefand witlgia furnacega-vhin a fcc;} o enin o a suita -mounte a a c killer p o vided withocke'ts thorium supported in'firont ofsaid eed-opcnin upon said shaft, ageaawheelion oneicnd .c said shaft,=a second gear-wheel mounted to meshwith the first-mentioned gear-wheel, a second shaft mounted below saidcylinder, a sleeve upon said second shaft, .8. swce suspended from saidsleeve, an arm -.carrie \by said sleeve, a spring for normally holdinsaid .arm in .a horizontal position, a second armcarried by said shaft,studs upon the second gear-wheel for successively engaging said secondarm and withdrawing solid sweep against the tension of said spring, saidstuds keing arranged to actuate the sweep to make alternate long,mediumand short forward propellingathrusts,

substantially .as-describ ed.

2. In a stoker, the combination with a coal-chute and with the wall of afurnace, said wall provided with a feegho ningtherethrough, of supportsmounts in front of said opening, a cylinder provided with peck etstherein mounted in said supports, a shaft journaled in said supports infront of the feed-opening, a sleeve upon said shatt, a swee platesecured to said sleeve, a plate suita ly supported for receiving thecoal which isldropped'from said cylinder in front" of saidsweep-plate anarm carried by said sleeve, s gear-wheelmounted on one of said an ports,an intermeshing ear-wheel on the cylinder-shaft bymeans 0 whic?mentioned gear-Wheelie driven, s uds onthe H first-mentioned wheel, saidstuds'locatedat {unequal distancesfrom' the cen'ter of said sleeve, andmeans connected with said second wheel'to 'su'ccessivf en age said-1 armassaid wheel revolves, a i on arm carried by said armadapted, whenthe'fir'st-mentioned arm is disengaged from said studs, to actuate saidsweep-plate to sweep; said coal forward through gaid feed-opening inalternate long, 'mediumand short' sweeps, substantially as described. T

3 .In-a stoker for furnaces, 'the combina-' tion with a-coal-chute andwith the front wall of a'furnace, said wall having a feed-openingtherethrough of suitable supports mounted I upon said wall,"a shaftjourna ed in Saideuports, a cylinder on said shaft, said-cylinderliaving longitudinal pockets in the face thereof, a ear-'Wheel'on oneend-of said shaft, a secon similar gear-wheel suitably mounted formeshing with the first-mentioned gearwheel, studs upon the secondgear-wheel, said studs located at unequal distances from the center ofsaid wheel, a second, shaft suitably mounted below the cylinder, asleeve about 'said' second shaft, a sweep secured ,to said sleeve, two,arms carried by said sleeve, one of all substantia 1y asdescribedand fort poses set forth and described.

4o 4. In astoker, the combination with-a,

said arms adapted to .be engaged by the studs on the gear-wheel, aspring connected with the other of said arms, andia plate mounted:

in said feed o ening and uponsaid supports, e P

coal-chute, and with the front wall of a, fur-l nace,-said 'wallprovided with a .feed-openin therethrou h, ofbrackets mounted on salw'allateac fendoi-said feed-openin stantially horizontal plate moun'teinsaid 'o ening and upon said brackets, upright pl by said brackets,- ashaft ates supporte the icoal-chute ,above "said cylinder, asuitably--two arms carried by said sleeve, one of sai tially .as .described. A

i this 15th day subs, 'ARTHURJAMES MASKREY."

journaled 'infsaid u 'ri ht, plates, a'cylinder upon said'shaft,-saicylinder having pockets therein,a.gear-wheel on the end of said shaft, asecond -gear-w'heel suitablymounted for meshing'withthe' gear-wheel onthe 8 ft, studs on the secondgear-wheel, a sec d upon said'second shaft,'a' sweeplate secured contact with the plate w the feed-opening and u onthe'bracketaanarm-carried b said s eeve', an adjustable spring attacheto said arm, a second arm carried by said sleeve, said second armadapted gear-whee prevent "'an"indraft of cold lair to t e fur- 5. In astoker for distributing fuel on the igipates of furnaces, thecombination with a shaft journaled in said upright plates, a sleeve s5to said sleeve between said uprig t plates, the lower edge of-said'sweepepallate slightly out of 'ch is mounted in.

rnace having a'fuel-opening, of a-pocketed Q,

cylinder mountedin front of saidfopening, a

mounted gear-wheel, studs on said wheel at f .une nal distances fromits-center, means for revo ving said wheel sup orted over said ear 8.bed-plate, a shaft;

shaft, a sweepcarried by said sleeve arms being adapted t'o'be c6ntactedsucces sively by saidstuds, and means'connected" with the other ofsaidarms adapted, when the first mentioned .arm is disengaged from 5 saidstuds, to actuate said sweep to brush fuel .85

deposited on said bed-plate forward into the;

furnacem sweeps of varying force, substan- Sig'nedby me at,

of January, .1903.-

,Witnesses; I H.'E,'DunLAP,' .C. E. Dunn.

1eeling,'West Virginia,

